<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文件名称" prop="name">
        <el-input v-model="queryParams.name" placeholder="请输入文件名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
          v-hasPermi="['system:manage:add']">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate"
          v-hasPermi="['file:manage:edit']">修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple" @click="handleDelete"
          v-hasPermi="['file:manage:remove']">删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport"
          v-hasPermi="['file:manage:export']">导出</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-upload ref="uploadRef" action="" accept=".xlsx, .xls, .pdf" :auto-upload="false" :on-change="handleUpload"
          :show-file-list="false">
          <el-button type="warning" plain icon="el-icon-upload" size="mini">上传</el-button>
        </el-upload>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="manageList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="主键id" align="center" prop="id" />
      <el-table-column label="文件名称" align="center" prop="name" />
      <el-table-column label="文件地址" align="center" prop="filePath" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
            v-hasPermi="['file:manage:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
            v-hasPermi="['file:manage:remove']">删除</el-button>
          <el-button size="mini" type="text" icon="el-icon-download" @click="handleDownload(scope.row)"
            v-hasPermi="['sys:common:download']">下载</el-button>
          <el-button size="mini" type="text" icon="el-icon-view" @click="handleReview(scope.row)">预览</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize"
      @pagination="getList" />

    <!-- 添加或修改文件对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="文件名称" prop="name">
          <el-input v-model="form.name" placeholder="请输入文件名称" />
        </el-form-item>
        <el-form-item label="文件地址" prop="filePath">
          <el-input v-model="form.filePath" type="textarea" placeholder="请输入内容" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listManage, getManage, delManage, addManage, updateManage, downLoadManage, uploadManage, getFileType } from "@/api/file/manage";

export default {
  name: "Manage",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 文件表格数据
      manageList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        name: null,
        filePath: null,
        status: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询文件列表 */
    getList() {
      this.loading = true;
      listManage(this.queryParams).then(response => {
        this.manageList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        name: null,
        filePath: null,
        status: 0
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加文件";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getManage(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改文件";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateManage(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addManage(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除文件编号为"' + ids + '"的数据项？').then(function () {
        return delManage(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    },
    /** 下载按钮操作 */
    handleDownload(row) {
      const evidenceUrl = row.filePath;
      const name = row.name;
      downLoadManage(evidenceUrl)
        .then(res => {
          // res就是接口返回的文件流了; 定义请求的接口时需标明responseType: 'blob',//将文件流转成blob对象
          let objectUrl = window.URL.createObjectURL(new Blob([res]));
          const elink = document.createElement('a');
          elink.download = `${name}`; //下载文件名称,
          elink.style.display = 'none';
          elink.href = objectUrl;
          document.body.appendChild(elink);
          elink.click();
          document.body.removeChild(elink);
          window.URL.revokeObjectURL(elink.href); // 释放URL 对象
        })
    },
    /** 预览按钮操作 */
    handleReview(row) {
      const evidenceUrl = row.filePath;
      let type = getFileType(evidenceUrl);
      if (type == "pdf") {
        window.open('/pdfjs/web/viewer.html?file=' + evidenceUrl, 'PDF', 'width:50%;height:50%;top:100;left:100;');
      } else {
        window.open(evidenceUrl, type, 'width:50%;height:50%;top:100;left:100;')
      }
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('file/manage/export', {
        ...this.queryParams
      }, `manage_${new Date().getTime()}.xlsx`)
    },
    /** 上传按钮操作 */
    handleUpload(file) {
      if (file != null) {
        let formData = new FormData();
        formData.append('files', file.raw)
        uploadManage(formData).then((res) => {
          let url = res.urls;
          console.log("url=" + url);
          var arr = {};
          var formDatas = new FormData();
          formDatas.append("name", file.name);
          formDatas.append("filePath", url);
          formDatas.forEach((value, key) => arr[key] = value);
          console.log(arr, "arr");
          addManage(JSON.stringify(arr)).then(response => {
            this.$modal.msgSuccess("新增成功");
            this.open = false;
            this.getList();
          });
        })
      }
    }
  }
};
</script>
